Data Item _chem_comp.one_letter_code

General

Item name
_chem_comp.one_letter_code
Category name
chem_comp
Attribute name
one_letter_code
Required in PDB entries
no
Used in currrent PDB entries
No
Used in the Chemical Component dictionary
Yes

Item Description

For standard polymer components, the one-letter code for the component. For non-standard polymer components, the one-letter code for parent component if this exists; otherwise, the one-letter code should be given as 'X'. Components that derived from multiple parents components are described by a sequence of one-letter-codes.

Data Type

Data type code
ucode
Data type detail
code item types/single words (case insensitive) ...
Primitive data type code
uchar
Regular expression
[][_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*